According to the Department of Environmental Services, a structural issue was identified a couple of weeks ago in the dam, which is owned by Brookfield Power. A patch was put in place, but an inspection Thursday found that the patch didn't work.

The state said there is no failure and no breach, but Brookfield Power activated its emergency plan as a precaution. State officials and state police were notified, and that prompted the alert from the NWS.

Officials said the dam is a low-hazard dam, which means that even if it fails, there would be no impact to people downstream.

The dam was in the middle of a draw-down, and the water is being lowered further to help deal with the situation.

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